NEW YORK — In the final results of an anti-dumping duty administrative review of imports of certain oil country tubular goods from China from May 19, 2010, to April 30, 2011, the Commerce Department’s International Trade Administration (ITA) has determined that Jiangsu Chengde Steel Tube Share Co. Ltd., Taizhou Chengde Steel Tube Co. Ltd. and Yangzhou Chengde Steel Tube Co. Ltd. (collectively known as Chengde Group) made sales in the United States at prices below normal value and issued a weighted-average dumping margin of 172.54 percent.